If you had hot water 3 days and then nothing, the WH may have shut down due to it reaching the "too hot" level. There have been others that have had a similar issue and they pushed the reset button located in the WH box. If you have the dial in the bath be sure the setting is not on the highest setting. We have ours set in the 1 o'clock position now. During the warmer months we had it set just above the "low flame" mark. In other posts on this same subject posters have noted they called Girard 866-559-1221. Very positive customer service and walked poster through finding the reset button and all was good.
Best to you. The system does work very well..........just a matter of getting acquainted with the difference.
You didn't say if the microwave rattle was while you are in transit. Plate and roller ring will definitely do some moving around like nbhybrid noted.
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